1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34345bb8dde9cd64548c200824010677706c91cbd8a177fae4272a90ef54a700. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c35ece36-5ea8-4ebf-8bbc-ef65d3f66541.json and https://artists.proofprofile.net/proofs/artist/c35ece36-5ea8-4ebf-8bbc-ef65d3f66541.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
El Sinaloense / El Toro Bravo / Ojos Negros / Suspiros
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f037f5b38a2309e9454efde1212e0bbc9d375760332dd3b86a8261bc0d262a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1850156 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4ddefbf2150014dcd46c1c2663381c58ad3f7685fdcedd2e5833daf56f9883. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1850159 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d77ba3bf49b478d0e32449530074a79e2cfedf517f07dea5f2549ba86123986. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1850164 — a six-check JSON result.
Puras Tocaditas Que Hacian Falta, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec8c3f16b1161162ba2cd222f52c78426c8d6599579eb7691bd4859797c06e5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS1977861 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89283b5939fc227e33c8ee545578232d5be5a32ae4c412d67ae41207b75a2c6f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS1977863 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558056f6bb25e59b378b0a386c2cf5a512f3ed7f5f33ba3b0bc393c8875f4c94. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS1977864 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a4855c012856d6521fb2572be151a28d34c90d6cd53641c410c0351d7ccce. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS1977867 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae0d8ef4c72a60cb9ab767bc72f665681b0d299c9861a9c7e245157731f283e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS1977869 — a six-check JSON result.
La Alejandrina / La Pachuca / La Dama del Karkis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa097fee0c60801b303abdd07ec9346bb0de6cb1abf4c64c12c002db94de8ab33. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS1977870 — a six-check JSON result.
Rancheras y Corridos Que Hacian Falta, Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe843789f5df38f457a4e7193ff63333fc227c11d3c854159cbd899b22b0f1a5b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM1985461 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aa931f3b4b134c18faa41dc301a8567d15077580e6c55be9dc094a30a5299a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM1985463 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27536feae1ab0a38f9271127d4e46c8f70e9055583fe5b8c0273ada94be9cef8. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM1985468 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f80cc2ca308f3ee003fd004d89dcad3804a469196e0e684786ed2273d75ea14. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ62201058 — a six-check JSON result.
El Chuma / El Pajaro Azul / Lucio Vazquez / Se Les Pelo Baltazar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824a7e42a69e8dc2642aaad3cbf1c4e7a3d5784f02acdb5e9bb96513587fe4a0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2457353 — a six-check JSON result.
Te Voy a Olvidar / Ya para Que / La Farsante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37ff0f585ad79b01cdedd3a6514faa2cc1d2cfd0b61e9e77509b7138a2ac73c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2419848 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf66b59da5a0a5e6400662ee7be154b27b23f1ea4f29074dee5eb290449f168e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2495291 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9170f6a6aebc2eee6a97c90f989e0291985de59fe517fda1f8d8d918d443b3f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2495292 — a six-check JSON result.
Agua Salada / Ayudame a Creer / Prision de Amor / Golpes en el Corazon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6d24c1aa350fe86c31c3248bfc53f8d19290b461c51bb59e16016f3fe2faf7. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2495293 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e0ddadb88543c3af8d583be4373d1424507037f4e23aef83810cd47a9445de. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2495294 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846b056b829286ca01ab8bd264f16fee83ce701f1c47ccfa71a2453b6393f900. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2495295 — a six-check JSON result.
Lamberto Quintero / Federal de Caminos / El Rengo del Gallo Giro / el Tarasco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13751664fab9fb5d8f6ef8cbd625afca080f61ee9ede5cdb76542e1fc65f683a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2495296 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e0c3c9da376861d8317b329bfdcdb787bc136b3bbaed5045977a47f156c64. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2495297 — a six-check JSON result.
Mi Gusto Es / El Sauce y la Palma / El Sinaloense
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cdbc49611a459c877d53bea45a13537accfaabcdc1d0b40221f6acd603807f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92586122 — a six-check JSON result.
Mi Casa Nueva / Ni Dada la Quiero / Amor a la Ligera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6373e324dfaa98e5ec717b9a6bd2d751c127f416f590139dd61aa5ae65837072. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92586123 — a six-check JSON result.
Música Romántica / Ya Se Fue / Mi Amor y Mi Agonía
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5021b75ce1a5f3a3a258e665448048d403948d0db6ee6d9a5a09b7dde6e05497. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92586124 — a six-check JSON result.
Seis Pies Abajo / Acábame de Matar / Como el Primer Día
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6763c99120e943756a05bf77621c67d693da1114403651a360c7f58f2c2cbd. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92586125 — a six-check JSON result.
Cuatro Meses / El Desquite / La Suata / Tu Nuevo Cariñito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775f825e104bfd71d503a647236096d691e24e0f842108f9d03859945b3a5805. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92586126 — a six-check JSON result.
Era Cabron el Viejo / Román Iriarte / El Rayo de Sinaloa / Contrabando Perdido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3a6407a2b9348db5142b2e6eb1298753a9f78f93133965b188417d05b5f572. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92586127 — a six-check JSON result.
Por Tu Maldito Amor / Volver Volver / La Ley del Monte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09c966d15e3f8e48bb534b1586ba19b1d0fba6d253cd51436b4e256bcc11db5. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92586128 — a six-check JSON result.
A Mis Enemigos / Mi Nuevo Amor / Soy Así
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f632acae34981a174e7859cd751f11939bfce67bf4ae4c78b9ec587d27f3185. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92586129 — a six-check JSON result.
Nadie Es Eterno / Te Vas Angel Mio / Puño de Tierra